GPIO Linux Apalis iMX6

I want to use the gpios of the from Linux on an Ixora carrier board with Apalis iMX6Q.
I succesfull mapped GPIO1-4. I can’t find the mapping between GPIO5-8 from Linux sysfs. Where can I find this mapping? No information from your article:

Basic GPIO

I need an additional GPIO and I want to use PWM1 on X27. What is the mapping GPIO of this pin?